Sylvania



LL. E-BERLY. SPOOI. CARRIER FOR BRAIDING MACHINES.

APPLICATION FILED IAN- 30, I9|9.

I Patented Deo. 23,1919.

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/I TTORNE YS T4. L. EBERLY.' ASPOOL CARRIER FOR BRAIDING MACHINES.

APPLICATION FILED IAN- 30. I9|9.

Patented Dee. 23,1919.

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SPOOIi-CARRIB. FOR BRAIDING-MACHINES.

Patented 11130.23; 1919.

Application filed January 3U, 1919. Serial No. 274,088.

To all whom t may Concern.' i

Be it known that l, Tnnononn L. lrlnnnnr, a citizen ofthe United States, residing at Springmont, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Spoolarriers for Braiding-Machines, of which the following is a specification.

My invention relates tospool carriers for braiding machines particularly, and it consists in improved means for automatically controlling` the feed of the spool material as fully described in connection with the accompanying drawing and the novel features of which are specifically defined in the subjoined claims.

Figure 1 is a side elevationof a spoolcarrier embodying my inventionin preferred form.

Fig. 2 is a front elevation of the same.

Fig. 3 is a separate view of the brake lever.

Fig. 4 is a fragmentary view showing the i shaft lock.

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Fig. 5 is a` separate plan view of the thread tensioning device.

'lhe main purpose of my invention is to secure a smooth feeding of the required spool material and the maintenance of a substantially uniform tension under the varying conditions incident to the travel of the carrier. y

'lo this end l employ a frictioircontrolled rotary spool which is subjected normally to a determined braking action, in connection with a thread-carried device adapted to automatically regulate said braking action as the thread tension is increased, so as to secure a smooth frictiomcontrolled feed, and also to maintain proper tension upon any slack thread occurring; as fully set forth in the following detailed description.

The carrier frame illustrated, comprises a base portion 2 adapted to the race-circle course of a` braiding machine as usual. From this base portion rises a forked upright 3, which is provided with a horizontal top portion 4c having a takeoff thread guide 5 and also serves as a top support for vertical guide posts 6, 6 of the frame as indicated.

Between the wide spread lower leg portions of the forked upright 3 is mounted a spool 10 for the material employed, which latter mayl be fibrous ormetallicthreadas desired. This spool is rotatably carried 'apen a shaft tra.

site ends supported in the spread legs of the upright; the spool being` made readily removable by provision, as indicated, for with drawing said shaft, a pivoted shaft lock 12 on the frame permitting of such shaft withdrawal laterally of the frame when desired, so as to release the spool. rlhe spool is provided with a' brake-band flange ring 15 which is preferably separately formed and mounted in the frame as shown, but which is rotatively connected with the mounted spool by an engaging pin 16 adapted to permit of ready disengagement for separate removal of the spool.

rlhe brake band lfupon the friction flange 15 of the spool has its opposite ends separately connected at 18 and 19 to a brake lever 2O so as to be caused to `grip or release the spool flange 115 in well known manner, by opposite movements of said lever. This lever as shown, has its band-connected hub portion mounted upon a pivot pin 21 fixed to the frame, upon which pin it is rotatably held by a key 22 engaged in a circular groove 23 of the pin.

ln my improved device a determined gripping or brake effect upon the spool is produced by a tensioned spring 24 connected to the lever 2O so as to normally close the band upon the friction flange l5 of the spool; such gripping effect being made sufficient to prevent any feeding of material from the spool until the thread-tensioning device 26 indicated as slidably mounted upon the guide posts 6 effects a releasing movement of said brake lever as hereinafter described.

rlhe fibrous or metallic thread from the spool passes over a guide pulley 30 iixedly mounted in the upper portion of the frame upright 3 and then downward to a carryin pulley 31 on the movable tensioning an slack-taking device 26 from which it passes to the take-off guide 5. rlhe device 26 as shown, is raised vertically upon its guide posts 6, 6 against tensioning springs 33 on the latter, by the pull upon the thread, so that any slack of the latter is subjected to required tension; and when such slack is taken up and a feeding of material is required, a lever contacting portion 3d of the device 26 is caused to press upward the end of the brake lever 2() against the action of the brake-applying spring 2 4. This upward ressure o the lever 2U thus reduces the the Titti spool until its frictional resistance is insufficient to overcome the tension upon the thread When the spool is turned as required to feed neviT material.

It Will be readily seen that the thread feeding action of this improved mechanism is remarkably smooth; the required turning of the spool being effected only when the normal braking pressure upon it is relieved, because of undue thread tension, and the extent of such feed movement being limited by the reduction of such undue tension which naturally follows the resulting feed; so that the tendency is not only to eliminate any jerky feeding such as is incident to a ratchet control, but to secure a uniform operating tension on the thread by avoidancerof slack. 'Ihe threadecarried device 26 however provides, as described, for maintaining a substantially uniform thread tension upon any slack thread occurring due to lthe varying swing of the carriers from the braiding center in each race-circle of the serpentine course provided in braiding machines.

What I claim is:

l. A braiding carrier comprising a frame, a horizontally mounted spool shaft, a rotatable brake-band ring thereon, a pivoted brake lever provided with a connected brake band, a brake-applying spring connected to said lever, and a suitably guided thread tensioning device having a thread-tensioning spring bearing thereon; said device being adapted to releasingly contact with said spring-operated brake lever When the device is moved to determinedly compress said thread-tensioning spring.

2. A braiding carrier comprising a frame having a pivot pin projection, a spool shaft horizontally mounted in said frame, a spoolengaging brake-band ring on said shaft, a slidable thread tensioning device, and a brake lever having a band-connected hub portion rotatably mounted upon said pivot pin projection and a sprinG-connected free end arranged in the path of said tensioning device.

3. In a braiding carrier comprising a feed-controlling brake mechanism, a laterally removable frame-supported spool shaft, and a separately formed spool-engaging brake-band ring separately mounted in the machine frame concentric with said shaft.

In testimony whereof I aix my signature.

THEO. L. EBERLY. 

